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EC number: 261-919-2 | CAS number: 59766-31-3
Water solubility
Administrative data
- Endpoint:
- water solubility
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 21 December 2017 - 6 February 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Cross-reference
- Reason / purpose for cross-reference:
- reference to same study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.6 (Water Solubility)
- Version / remarks:
- 2016
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 105 (Water Solubility)
- Version / remarks:
- 1995
- Deviations:
- no
- Qualifier:
- equivalent or similar to guideline
- Guideline:
- EPA OPPTS 830.7840 (Water Solubility)
- Version / remarks:
- 1998
- Deviations:
- no
- GLP compliance:
- yes
- Type of method:
- column elution method
Test material
- Reference substance name:
- Dipotassium titanate(2-)
- EC Number:
- 261-919-2
- EC Name:
- Dipotassium titanate(2-)
- Cas Number:
- 59766-31-3
- Molecular formula:
- K2O17Ti8
- IUPAC Name:
- dipotassium titanate(2-)
- Test material form:
- solid: particulate/powder
- Details on test material:
- Appearance: White powder (fibrous particle)
Test item storage: At room temperature
Constituent 1
Results and discussion
Water solubility
- Key result
- Water solubility:
- <= 0.041 mg/L
- Conc. based on:
- test mat. (dissolved fraction)
- Incubation duration:
- > 16 h
- Temp.:
- 19.6 °C
- pH:
- >= 7 - <= 7.5
- Remarks on result:
- other: highest value at any flow rate
- Details on results:
- The turbidity of the eluates was < 0.2 NTU. According to this, no undissolved particles were detected in the eluates.
The pH of the aqueous samples was 7.0 and 7.5.
Analysed mean concentration in the water sample at flow rate 24 mL/h was 0.0165 mg/L (n=10, CV = 14%).
Analysed mean concentration in the water samples at flow rate 12 mL/h was 0.0148 (n=10, CV = 60%).
Average of two runs: 0.0156 mg/L.
The maximum difference (MD) on the mean values of the samples at both flow rates was ≤ 30%. However, since a high variation between different aliquots (> 30%) was observed, the water solubility was concluded to be ≤ 0.041 mg/L as this was the highest value at any flow rate.
Test item was detected in the samples from the blank column. The maximum contribution to the area of 0.0412 mg/L was ≥ 9.8% at a flow rate of 24 mL/h and ≥ 9.3% at a flow rate of 12 mL/h. This concentration was considered negligible.
Applicant's summary and conclusion
- Conclusions:
- The water solubility of the substance at 20°C was determined to be <=0.041 mg/L.
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